A5100317973- Advanced MIMO Systems Optimization
- Optical Wireless Communication Technologies
- Energy Harvesting in Wireless Networks
- Indoor and Outdoor Localization Technologies
- Cooperative Communication and Network Coding
- Optical Network Technologies
- Advanced Wireless Network Optimization
- Advanced Photonic Communication Systems
- Wireless Communication Networks Research
- Underwater Vehicles and Communication Systems
- Wireless Power Transfer Systems
- Antenna Design and Analysis
- Full-Duplex Wireless Communications
- Smart Parking Systems Research
- Advanced Wireless Communication Technologies
- Energy Efficient Wireless Sensor Networks
- Radio Wave Propagation Studies
- Power Line Communications and Noise
- Satellite Communication Systems
- Microgrid Control and Optimization
- Innovative Energy Harvesting Technologies
- Advanced Adaptive Filtering Techniques
- Robotics and Sensor-Based Localization
- Image Enhancement Techniques
- Wireless Networks and Protocols
Viavi Solutions (United Kingdom)
2020-2023
Beijing University of Posts and Telecommunications
2013-2022
Ningxia Water Conservancy
2022
State Key Laboratory of Information Photonics and Optical Communications
2022
Chang'an University
2017-2022
University of Victoria
2015-2022
Harbin Institute of Technology
2021-2022
State Grid Corporation of China (China)
2021
National University of Defense Technology
2019-2020
Zhejiang University of Technology
2019
Free-space optics (FSO) and visible light communication (VLC) share the same optical wireless features, such as high data rate, license free, energy efficient, flexible access, degree of security. A hybrid network based on FSO/VLC heterogeneous interconnection is presented here for future space-air-ground-ocean-integrated architecture, especially in radio-frequency-sensitive (RF) or security-required environments. The functional modules coordinator are defined, along with implementation...
This paper numerically and experimentally investigates the performance of free-space optical receiver using modes diversity coherent receipt under moderate-to-strong turbulence. By utilizing a three-mode photonic lantern with digital maximum ratio combining, 40 Gbps QPSK signal is received. The turbulence strength measured by beam diameter to atmospheric coherence length, D/r0. larger D/r0, stronger is, vice versa. Compared conventional single mode fiber based receipt, required transmitted...
In recent years, visible light positioning (VLP) systems have attracted considerable attention because they do not require additional infrastructures. However, most existing researches on the VLP ignore impact of wall diffuse reflection, which can lead to dramatical decrease position accuracy performance near indoor walls and corners. this paper, we design an system with one single light-emitting diode (LED) a rotatable photodetector (PD), then propose algorithm based machine learning (ML)...
Recently, the Min-Max algorithm has been widely used in various indoor positioning systems due to its simplicity and robustness. In this article, an improved whale optimization (IWOA) associated with is proposed improve accuracy concerning original for visible light (VLP) systems. algorithm, three-dimensional (3-D) region of interest (RoI) affiliated target node (TN) first obtained using then IWOA employed find accurate position TN 3-D RoI lowest fitness value. software simulations,...
Non-line-of-sight ultraviolet propagation models have been developed for both coplanar and noncoplanar geometries. Based on an exact integral-form single-scatter model, this Letter proposes approximate closed-form model tractable analysis applicable to geometries with a narrow transmitter beam or receiver field of view. Numerical results path loss are presented various system These verified the previous showing our agrees well former outperforms latter.
The Internet of Radio-Light (IoRL) is a cutting-edge system paradigm to enable seamless 5G service provision in indoor environments, such as homes, hospitals, and museums. draws on innovative architectural structure that sits the synergy between Radio Access Network (RAN) technologies millimeter Wave communications (mmWave) Visible Light Communications (VLC) for improving network throughput, latency, coverage compared existing efforts. aim this paper introduce IoRL architecture present key...
Generalized Zero Forcing (GZF) is an extension of the zero forcing beamforming method to deal with downlink multiuser MIMO communications when users have more than one receive antenna. In literature, Singular Value Decomposition (SVD) based channel Block Diagonalization (BD) proposed eliminate interference for GZF, but it computationally inefficient. this letter, we propose generate a GZF precoder by using product pseudo inverse matrix and block diagonal appropriate form, whose optimality...
In this paper, we propose an optimal relay transmission policy by using a stochastic energy harvesting (EH) model for the EH two-way network, wherein is solar-powered and equipped with finite-sized battery. policy, long-term average outage probability minimized adapting power to wireless channel states, battery amount, causal solar states. The designed problem formulated as Markov decision process (MDP) framework, conditional probabilities both decode-and-forward (DF) amplify-and-forward...
An optimal transmission policy is considered for energy harvesting (EH) wireless point-to-point communications, wherein the source node solar-powered and equipped with a finite-sized battery. The long-term outage probability minimized by adapting power to causal arrival information, battery amount channel fading through Markov decision process (MDP) framework. We reveal an interesting saturated structure of expected which it eventually converges empty in high signal-to-noise ratio (SNR)....
Min-Max algorithm was widely used as a simple received signal strength (RSS-) based for indoor localization due to its easy implementation. However, the original only achieves coarse estimation in which target node (TN) is regarded geometric centroid of area interest determined by measured RSS values. Although extended (E-Min-Max) methods using weighted instead were recently proposed cope with this problem, improvement accuracy still limited. In paper, an improved partition strategy...
A novel wearable button antenna sensor is proposed for the concept of simultaneous wireless information and power transfer (SWIPT). This integrates two working modes information, respectively, optimizes efficiency. An omni-directional radiation pattern achieved in 3.5 GHz World Interoperability Microwave Access (WiMAX) band to support on-body communications, while a circularly polarized broadside obtained 5 local area networks (WLAN) harvest power. The measured −10 dB return loss bandwidths...
In this paper, we consider an energy harvesting (EH) two-way (TW) dual-relay network, including one non-EH relay and EH equipped with a finite-sized battery. the space-time transmission protocol network coding is designed, optimal policy for proposed by using stochastic solar model. policy, long-term paired-wise error probability (PEP) of system minimized adapting relay's power to knowledge its current battery energy, channel fading status, causal information. The designed problem formulated...
Interference management is one of the most important issues in two-tier femtocell networks which a central macrocell underlaid with several hotspots. To address cross-tier and co-tier interference, this paper introduces an energy-efficient power control algorithm via convex pricing scheme, where both circuit transmit have been considered. achieve target SINR, protects itself by actively adapting its interference cap on total they are willing to tolerate from user equipments (FUEs), while FUE...
Traditional cellular network standards require users downlink(DL) and uplink(UL) associated to the same BS. However, due power gap between BSs different transmission environment(e.g. path gain) of DL UL, a serving BS with strongest downlink would yield non-serving in uplink. In this paper we propose DL/UL splitting user association framework under two-tier heterogeneous network, which femtocell base stations are randomly located over macro station specific area. Downlink Uplink ergodic...
Various patterns of device-to-device (D2D) communication, from Bluetooth to Wi-Fi Direct, are emerging due the increasing requirements information sharing between mobile terminals. This paper presents an innovative pattern named visible light communication (D2D-VLC) alleviate growing traffic problem. However, occlusion problem is a difficulty in D2D-VLC. proposes game theory–based solution which best-response dynamics and strategies used realize mode-cooperative selection mechanism....
In this paper, an optimal transmission policy for two-way relay networks is investigated by using a stochastic energy harvesting (EH) model. Considering the channel and finite battery conditions, we propose to maximize long-term achievable sum rate of network. The design problem formulated as Markov decision process (MDP), well-known value iteration approach used find policy. Based on policy, analyze expected point out spreading structure power with respect solar panel size. Simulation...
With greater demands for cost-effective, reliable, and highly accurate positioning, indoor wireless localisation using Visible Light Positioning (VLP) is a promising solution future networks. One can expect VLP solutions to appear in all environments, from homes industry; however, the existing literature primarily considers Communication (VLC) sources with purely Lambertian emission patterns. To facilitate versatility within solutions, this paper non-Lambertian sources. It evaluates...
With the building of a smart grid, establishment private network dedicated to control and management grid provide reliable secure power services is attracting more attention. Meanwhile, owing rapid development wireless wideband communication technologies, today's communications are increasingly considered by as means serve supplementary method fiber-optics extend places where traditional wired technology cannot reach. Based on demand analysis, this paper summarizes networking technologies...
Visible light communication has drawn much attention due to the extensive use of emitting diodes (LED). For ultra-dense small cell deployment, visible define position users for providing services and switch policies, deal with superposition light. In this paper, we propose an indoor intelligent system based on Triple-Domain-Cooperation scheme (TDC) which integrates positioning. our experiment, positioning four color theorem gets average error 0.04m, communication's bit rate lO <sup...
In view of the problems electric power wireless communication and to serve consumer better, network optimization in system are analyzed, multiple methods proposed. It makes a detailed analysis parameter configuration coverage system. The scheme provides technology support for access construction late operation, lays foundations popularization application LTE private network.
Traditional localization algorithms based on received signal strength indication (RSSI) construct ranging model through the log-normal shadowing model, in which parameters are usually chosen empirically and therefore sensitive to influence of environments. In this paper, an indoor method sparrow search algorithm (SSA) backward propagation (BP) neural network is proposed model. SSA-BP method, collected RSSI values firstly processed by Gaussian filtering then input into can output distance...